Pointer to an array of doubles
in which to return the co-efficients of the linear
approximation to the specified transformation. This array should
have at least "( Nin
1 )
Nout", elements. The first Nout elements
hold the constant offsets for the transformation outputs. The
remaining elements hold the gradients. So if the Mapping has 2 inputs
and 3 outputs the linear approximation to the forward transformation
is:
X_out = fit[0]
fit[3]
X_in
fit[4]
Y_in
Y_out = fit[1]
fit[5]
X_in
fit[6]
Y_in
Z_out = fit[2]
fit[7]
X_in
fit[8]
Y_in